You support a Skype for Business environment.
Unified Messaging has been configured in the existing Exchange 2013 environment as part of the Skype for Business project. You plan to deploy Enterprise Voice for all users, including users who have Skype for Business Phone Edition devices that connect by using a LAN cable and a USB cable.
When a test user signs into Skype for Business, a prompt is displayed requesting user credentials for the Phone Edition device. The user logs in and after a delay, a yellow warning triangle appears on every test Phone Edition device.
In reviewing the device for errors, you discover that Exchange integration is failing with the following error:
Connection to Microsoft Exchange is unavailable. Please contact your support team.
Logs from the Skype for Business Phone Edition device are displayed in the Exhibit 1. Click the celog button.
Internet Information Services (IIS) logs from the Exchange server are displayed in Exhibit 2. Click the iislog button.
You need to ensure that the device can authenticate to Exchange Web Services.
What should you do?
A. Reissue the current Exchange CAS server certificate and bind to the IIS service.
B. Update the certificate chain on the Exchange CAS.
C. Remove the Skype for Business Client certificates for the test user from the Skype for Business server.
D. Update the Skype for Business server internal web services certificate on each front-end pool server.
